Create taskFileAttachment

POST https://graph.microsoft.com/beta/me/todo/lists/AAMkpsDRVK=/tasks/AAKdfjhgsjhgJ=/attachments
Content-Type: application/json

{
  "@odata.type": "#microsoft.graph.taskFileAttachment",
  "name": "smile",
  "contentBytes": "a0b1c76de9f7=",
  "contentType": "image/gif"
}

// Code snippets are only available for the latest version. Current version is 5.x

// Dependencies
using Microsoft.Graph.Beta.Models;

var requestBody = new TaskFileAttachment
{
	OdataType = "#microsoft.graph.taskFileAttachment",
	Name = "smile",
	ContentBytes = Convert.FromBase64String("a0b1c76de9f7="),
	ContentType = "image/gif",
};

// To initialize your graphClient, see https://learn.microsoft.com/en-us/graph/sdks/create-client?from=snippets&tabs=csharp
var result = await graphClient.Me.Todo.Lists["{todoTaskList-id}"].Tasks["{todoTask-id}"].Attachments.PostAsync(requestBody);

// Code snippets are only available for the latest major version. Current major version is $v0.*

// Dependencies
import (
	  "context"
	  msgraphsdk "github.com/microsoftgraph/msgraph-beta-sdk-go"
	  graphmodels "github.com/microsoftgraph/msgraph-beta-sdk-go/models"
	  //other-imports
)

requestBody := graphmodels.NewAttachmentBase()
name := "smile"
requestBody.SetName(&name) 
contentBytes := []byte("a0b1c76de9f7=")
requestBody.SetContentBytes(&contentBytes) 
contentType := "image/gif"
requestBody.SetContentType(&contentType) 

// To initialize your graphClient, see https://learn.microsoft.com/en-us/graph/sdks/create-client?from=snippets&tabs=go
attachments, err := graphClient.Me().Todo().Lists().ByTodoTaskListId("todoTaskList-id").Tasks().ByTodoTaskId("todoTask-id").Attachments().Post(context.Background(), requestBody, nil)

// Code snippets are only available for the latest version. Current version is 6.x

GraphServiceClient graphClient = new GraphServiceClient(requestAdapter);

TaskFileAttachment attachmentBase = new TaskFileAttachment();
attachmentBase.setOdataType("#microsoft.graph.taskFileAttachment");
attachmentBase.setName("smile");
byte[] contentBytes = Base64.getDecoder().decode("a0b1c76de9f7=");
attachmentBase.setContentBytes(contentBytes);
attachmentBase.setContentType("image/gif");
AttachmentBase result = graphClient.me().todo().lists().byTodoTaskListId("{todoTaskList-id}").tasks().byTodoTaskId("{todoTask-id}").attachments().post(attachmentBase);

const options = {
	authProvider,
};

const client = Client.init(options);

const attachmentBase = {
  '@odata.type': '#microsoft.graph.taskFileAttachment',
  name: 'smile',
  contentBytes: 'a0b1c76de9f7=',
  contentType: 'image/gif'
};

await client.api('/me/todo/lists/AAMkpsDRVK=/tasks/AAKdfjhgsjhgJ=/attachments')
	.version('beta')
	.post(attachmentBase);

<?php
use Microsoft\Graph\Beta\GraphServiceClient;
use Microsoft\Graph\Beta\Generated\Models\TaskFileAttachment;


$graphServiceClient = new GraphServiceClient($tokenRequestContext, $scopes);

$requestBody = new TaskFileAttachment();
$requestBody->setOdataType('#microsoft.graph.taskFileAttachment');
$requestBody->setName('smile');
$requestBody->setContentBytes(\GuzzleHttp\Psr7\Utils::streamFor(base64_decode('a0b1c76de9f7=')));
$requestBody->setContentType('image/gif');

$result = $graphServiceClient->me()->todo()->lists()->byTodoTaskListId('todoTaskList-id')->tasks()->byTodoTaskId('todoTask-id')->attachments()->post($requestBody)->wait();

Import-Module Microsoft.Graph.Beta.Users

$params = @{
	"@odata.type" = "#microsoft.graph.taskFileAttachment"
	name = "smile"
	contentBytes = "a0b1c76de9f7="
	contentType = "image/gif"
}

# A UPN can also be used as -UserId.
New-MgBetaUserTodoListTaskAttachment -UserId $userId -TodoTaskListId $todoTaskListId -TodoTaskId $todoTaskId -BodyParameter $params

# Code snippets are only available for the latest version. Current version is 1.x
from msgraph_beta import GraphServiceClient
from msgraph_beta.generated.models.task_file_attachment import TaskFileAttachment
# To initialize your graph_client, see https://learn.microsoft.com/en-us/graph/sdks/create-client?from=snippets&tabs=python
request_body = TaskFileAttachment(
	odata_type = "#microsoft.graph.taskFileAttachment",
	name = "smile",
	content_bytes = base64.urlsafe_b64decode("a0b1c76de9f7="),
	content_type = "image/gif",
)

result = await graph_client.me.todo.lists.by_todo_task_list_id('todoTaskList-id').tasks.by_todo_task_id('todoTask-id').attachments.post(request_body)